$OpenBSD: patch-src_common_quoted-printable_h,v 1.2 2013/09/25 08:03:14 landry Exp $
http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=2640
--- src/common/quoted-printable.h.orig	Tue Mar 19 02:31:04 2013
+++ src/common/quoted-printable.h	Sun Sep 22 23:00:10 2013
@@ -22,6 +22,18 @@
 
 #include <glib.h>
 
+/* Processes at most 78 characters from in buffer,
+ * and stores one NULL-terminated line of at most 76 characters (excl. \0) of
+ * quoted-printable output without terminating newline characters in out buffer.
+ * Except when encoding text, every output line ends in a soft line break.
+ * Therefore the caller can chain multiple lines of encoded data resulting from
+ * sequential runs by glueing them together with line breaks.
+ * The number of processed input characters is returned. */
+gint qp_encode                 (gboolean       text,
+				gchar          *out,
+				const guchar   *in,
+				gint           len);
+/* Deprecated */
 void qp_encode_line		(gchar		*out,
 				 const guchar	*in);
 gint qp_decode_line		(gchar		*str);
